. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. AMINO ACID TRANSPORT IN MYTILUS 305 affinity system or passive diffusion appears to become increasingly important. However, when the data are corrected for the presence of the inulin space, influx appears to be by a single component, fully saturable system, which follows Michaelis-Menten type kinetics. No evidence was found to support postulation of a second, low-affinity carrier system. The close agreement of ]1max for the two substrates suggests that glycine and cycloleucine enter i'ia the same pathway(s). Passive diffusio
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. AMINO ACID TRANSPORT IN MYTILUS 305 affinity system or passive diffusion appears to become increasingly important. However, when the data are corrected for the presence of the inulin space, influx appears to be by a single component, fully saturable system, which follows Michaelis-Menten type kinetics. No evidence was found to support postulation of a second, low-affinity carrier system. The close agreement of ]1max for the two substrates suggests that glycine and cycloleucine enter i'ia the same pathway(s). Passive diffusion can play no significant role in the influx of amino acids. Mytilus and other bivalves maintain high steady-state concentrations of free amino acids in their tissues. If the gill membrane had permeability properties such that passive diffusion could occur from external concentrations in the 100 range 40 - z o U O u primary amine - O 14C- o-o o o. 10 — (D — 12 34 TIME (hrs) FIGURE 7. The change in medium concentration of 14C-glycine and total primary amine resulting from the incubation of isolated gill tissue in either Na-MBL or Ch-MBL as a function of time. The data obtained at each time interval represent the measurements of medium concentration in separate parallel experiments. Duplicate samples were taken for the determination of radioactivity and total primary Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology